Gas range pilot hood



p 1963 E. J. ZARYBNICKY 3,104,697

GAS RANGE PILOT HOOD Filed Dec. 22, 1960 IN V EN TOR:

ATTORNEYS.

SYMMETRY United States Patent 3,104,697 GAS RANGE PILOT HOUD Edward J. Zarybnicky, Cleveland, Ohio, assignor, by mesne assignments, to Aurora Corporation of Illinois, a corporation of Illinois Filed Dec. 22, 1960, Ser. No. 77,733 4 Claims. (Cl. 158-115) This invention relates to gas range pilot light devices, and more particularly to improvements in draft and concussion shielding hood and baflle arrangements especially adapted for use in conjunction with the low B.t.u. type pilots such as the so-called hypodermic needle type lighter.

It is a primary object of the present invention to provide improved pilot port, housing, and draft baflle arrangements as aforesaid, whereby air breezes and shocks such as are caused her example by dropping a utensil onto the burner grate, will be successfully countered so that the pilot will not be extinguished.

Another object is to provide an improved device which is operable as aforesaid without impairment of its burner ignition capabilities.

Still another object is to provide an improved device as aforesaid which is designed to be relatively easily and inexpensively manufactured.

Other objects and advantages of the invention will be apparent from the following specification and accompanying drawings wherein:

FIG. 1 is a fragmentary sectional view through :a range burner and a pilot light arrangement having one form of pilot housing and baffle of the invention mounted thereon;

FIG. 2 is an end View taken on line IIII of FIG. 1;

FIG. 3 is a section taken on line III-III of FIG. 1;

FIG. 4 is a section taken on line IV-IV of FIG. 1;

FIG. 5 is a plan view of the pilot housing and baflle device of FIG. 1; and

FIG. 6 is a fragmentary plan, on reduced scale, of a blanked metal sheet from which part of the device is fabricated.

As shown in FIG. 1, the range burner is indicated generally at 10 as having a main annular gas outlet chamber 12 and a charge port 14 for directing gas toward the.

pilot light device for burner ignition purposes. The burner cap is indicated at 15 and is provided with burner ports 16. The pilot supply tube is indicated at 18, and the jet is of the hypodermic needle type supplying a minute flame 22 Which normally burns as shown at all As shown in FIGS. 1-5, a pilot housing of sheet metal form is provided to comprise a cylindrical wall portion 24 open at its front end and spanned at its lower rear end portion by a cross plate 26 which is centrally bored for a pressed fit upon the jet thimble carried by the supply tube 18, thereby mounting the housing to encompass the pilot flame as shown in FIG. 1. Adjacent its front end the housing 24 mounts interiorly thereof a baflle device designated generally at 30. This bafile may conveniently comprise a sheet metal stamping of conical cup-shaped form, press-fitted or otherwise mounted within the housing wall 24 as will be explained hereinafter.

As shown in FIGS. 1, 3, a combustion air inlet opening 32 or arcuate shape is provided through the upper rear end portion of the housing 24, and a similarly shaped opening 34 is provided through the bafile device 30, as shown in FIGS. 1, 2, 3. A pair of vent holes 36-36 are also provided in the central ceiling portion of the housing 24, and the lower front end portion of the housing is cut away as indicated at 38 (FIGS. 1, 4) to supply 3,104,697v Patented Sept. 24, 1963 Ice plurality of pieces welded or otherwise fixed together; or it may be conveniently formed of a single piece of sheet metal initially stamped as shown in FIG. 6 to provide the openings referred to hereinabove and then rolled into the form of the housing structure as shown in FIGS. 1-5. Thus the back wall portion 26, having arms 40-44 integrating the back wall 26 with the main body portions 24-24 be suitably punched as indicated at 41 to receive the hub portion 42 of the jet piece 21) in pressfitted relation therein. The reduced diameter shank portion 44 of the jet piece then receives the gas supply tube 1 8 in press-fitted relation thereon, to complete the rear end assembly of the device.

For mounting the bafile 30 interiorly of the housing as shown in FIGS. 1, 4, the opposite side wall portions of the housing 24 are notched as indicated at 46-46 and the baflie disc is provided at its opposite sides with laterally extending arms 48-48 so shaped as to slide-fit into the notches 4646 of the housing. The outer ends 49 of the fingers 48 are then adapted to be bent progressively inwardly against the outside walls of the housing until the extreme finger end portions 49 lock into slots 50 -50 previously punched through the opposite side walls of the housing 24.

In operation, when the burner control valve is turned to an open position gas is supplied simultaneously to the main burner ports 16 and to the charge port 14, and the gas from the charge po-nt is directed into the hood through the opening 34 where it becomes ignited by the pilot flame 22 and flashes back to burn at the charge port. This causes ignition of the gas at the main burner. Thus, the device operates to allow instant ignition of the burner, while at all times the hood and baffle protect the pilot flame 22 against extinguishment from drafts or concussion elfects, or the like. The opening 32 at the top rear portion of the hood is provided to vent the cornbustion products of both the pilot supply and the change port gas. The openings 36-36 in the ceiling of the hood also operate to vent 01f pilot light combustion products, but also function as peep holes through which openation of the pilot light may be conveniently observed.

Although in the drawing herewith the bafiie member 30 is shown to be of concave or conical form, in lieu thereof it may be of flat form or even convexly conical. The thirn ble 44 is also provided with a trap extension 54, and the arrangement of the fuel supply line '18 and the extension 54 of the jet piece as shown in FIGS. 1 and 5, provides a dust and dirt trap in the fuel supply to the pilot light. It will of course be appreciated that whereas only one form of the invention has been illustrated and described in detail herein various changes may be made therein without departing from the spirit of the invention or the scope of the accompanying claims.

I claim:

1. In combination, a gas burner and a pilot light housin-g device comprising a generally cylindrically shaped hood having a rear end partial closure plate, said closure plate being centrally bored, a pilot light jet member extending through the bore in said closure plate, a draft b'allle device disposed transversely of the interior of said hood adjacent the front end thereof, said baffle being of concave conical form and provided with a gas inlet aperture adjacent the upper marginal edge thereof, said burner having main burner ports and a charge port directed laterally therefrom towards said btafiie below said gas inlet aperture, said hood having a portion overhanging said blaflle on that side thereof facing said charge port, and means including said charge port, said overhanging portion of the hood and said gas inlet aperture to direct gas from the charge port to said jet member.

2. In combination, a gas burner and a pilot light housing device comprising a hood having a mounting memher at its rear end, said mounting member having an opening, a pilot light jet member projecting through said opening, a draft baffle device disposed transversely of the interior of said hood intermediately of its ends, said b aille being of transverse wall form and provided with a gas transfer aperture adjacent the ceiling thereof, said burner having main burner ports and a charge port directed laterally therefrom towards said baffle below said gas transfer aperture, said hood having a portion overhanging said haflle on that side thereof facing said charge port, and means including said charge qport, said overhanging portion of the hood and said gas transfer aperture to direct :gas from the charge port to said jet member.

3. In combination, a gas \burner and a pilot light housing device comprising a generally cylindrically shaped hood having a closure plate at its rear end aperture-d rat the top thereof, a pilot light jet member mounted on said closure plate, said hood being cut away at a bottom cylindrical Wall portion thereof and having gas outlet and peep hole apertures in the top wall portion thereof, a draft hafiie device disposed transversely of the interior of said hood intermediately of its ends, said hafile comprising a transverse wall provided with a gas transfer aperture adjacent the upper marginal edge thereof, said burner having a charge port directed laterally therefrom towards said hafie below said gas inlet aperture, said hood having a portion overhanging said bafile on that side thereof fiacing said charge port, and means including said charge port, said overhanging portion of the hood and said gas transfer aperture to direct gas from the charge port to said jet member.

4. In combination, a gas burner and a pilot light housing device comprising a cylindrically shaped hood having a partial closure at its rear end and being partially open 'at its front bottom Wall portion, a pilot light jet burning within said hood, a draft baffie device disposed transversely of the interior of said hood adjacent the front end thereof, said hafiie ibeing provided with a gas inlet aperture adjacent the ceiling of said hood, said burner having main burner ports and a charge port directed laterally therefrom, said hood having a portion overhanging said bafile on that side thereof facing said charge port, and means including said charge port, said overhanging por tion of the hood and said gas inlet aperture to direct gas 20 from the charge port to said jet member.

Weber July 28, 1959 2,941,588 Blanzy June 21, 1960 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No, 3, 104 697 September 24, 1963 Edward J. Zarybnicky It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 4, line 16., after "therefrom" insert towards said baffle below said gas inlet aperture Signed and sealed this 31st day of March 1964.

SEAL) ttest:

ERNEST W SWIDER EDWARD J. BRENNER Attesting Officer Commissioner of Patents 

2. IN COMBINATION, A GAS BURNER AND A PILOT LIGHT HOUSING DEVICE COMPRISING A HOOD HAVING A MOUNTING MEMBER AT ITS REAR END, SAID MOUNTING MEMBER HAVING AN OPENING, A PILOT LIGHT JET MEMBER PROJECTING THROUGH SAID OPENING, A DRAFT BAFFLE DEVICE DISPOSED TRANSVERSELY OF THE INTERIOR OF SAID HOOD INTERMEDIATELY OF ITS ENDS, SAID BAFFLE BEING OF TRANSVERSE WALL FORM AND PROVIDED WITH A GAS TRANSFER APERTURE ADJACENT THE CEILING THEREOF, SAID BURNER HAVING MAIN BURNER PORTS AND A CHARGE PORT DIRECTED LATERALLY THEREFROM TOWARDS SAID BAFFLE BELOW SAID GAS TRANSFER APERTURE, SAID HOOD HAVING A PORTION OVERHANGING SAID BAFFLE ON THAT SIDE THEREOF FACING SAID CHARGE PORT, AND MEANS INCLUDING SAID CHARGE PORT, SAID OVERHANGING PORTION OF THE HOOD AND SAID GAS TRANSFER APERTURE TO DIRECT GAS FROM THE CHARGE PORT TO SAID JET MEMBER. 